Needle-clamp



A. H. DE VOE. NEEDLE CLAMP.. `APPLICATION FILED MAYII. |918.

1,401,466, Patented m0211921.4

l! III l I I lNvENTofR `wnfrfsfissss' WM y BY I :m/rfk UNITED STATES PATENT OFFICE.

ALZBMTH. :DI 0F VIEB'I'IIMSEII'JB;` NEW JERSEY, ASBIGNOR T0 TEE SINGER MANU- FACTURING GOMIAN'Y,` A` COBPGRATION 0F NEW JERSEY.

NEEDLE-emr. v

Application illeei` Hay 11,

To all whom t may concern:

Be it known that I, ALBERT H. DE Von, a citizen of the United States, residin `at Westfield, in thecounty of Union and tate of New Jersey, have inventedcertain new and" useful Improvements in NeedlesClamps, of which the following is a specification, reference being had therein to the accompan ing drawings.

Tiiis 1nventionrelates to sewing machines and specifically to means for clamping needles to the needle-bar thereof.

In multi le needle machines using slabbed shank need es it has been customary to drill a succession ot" arallel sockets as close together as possi le and file away or otherwise remove, the intervening material to forman elongated opening with parallel sides and rounded ends. Such a type oflneedle-clamp necessitated the use ofneedles whose shanks are slabbed differently. In renewing such needles vexatious delaysL often resulted. It

`is an object of the present invention to provide a needle-clamp whose socket is fashioned to receive needles with shanks slabbed alike to avoid embarrassment and delay in replacing and renewing the same.

In the needle-clamps for multiple stitching machines of the type mentioned it is desirable in some instances to form seams in close parallel rows. The present invention also alms to permit stitching in close arallel rows without sacrificing rigidity o grip on the needle or unduly weakening its shank.

The invention consists of a needle-clamp secured to the lower end of a needle-bar and provided with a rectangular socket in longitudinal alinement within which is a thrust or clamp-screw threaded into an end Wall of the socket and adapted to grip the y Shanks of needles slabbed on opposite sides in parallelism.

A form of the invention is illustrated in the accompanying drawings, in which Figure 1 is a front elevation ofthe clamp on the lower end of a needle-bar, a part thereof being shown in section. Fig. 2 is a transverse section through the clamp on the line A-B, Fig. 1, and Fig. 3 is a perspective of the parts of the clamp in spaced relation.

The lower end of the needle-bar 1 is threaded Shank 2 of a block 3 channeled at 4 Speuieaton of Letters Patent.

Patented Dec. 27, 1921.

191s. serial No. 234,007.

transversely of the axis of the needle-bar and also longitudinally channeled on opposite sides parallel with the needlebar as indicated at 5-5. Bands 6--6 provided with 'll-shaped channels 7-7 embrace the block 3 with their lugs 8 fitted snugly and tightly into the channels 5 5. Into one of the bands 66 is threaded a clamping screw 9 in line with the transverse channel 4. Needles 10 having their Shanks slabbed in parallelism, as indicated at 11, and all alike, are adapted to seat within thethe rectangular socket formed by the channel 4 and bands 6 6 in which socket they may be clamped by the screw 9. The transverse channel 4f inV width is equal to the diameter of the needle-shank s, thus lining the needles up in oneY plane.

While it is preferred to removably secure the bands 6-6by a snug lit of the lugs 8 with-intheA channels 5, it is obvious that the securing ofthe bands 6 to the block 3 may be permanent and effected in other ways as for instance by very slightly tapering the side walls of the channels 55 or by soldering the contiguous faces of the lugs S on the complementary bands 6-6. It is preferred, however, to snugly fit the bands in place in order to permit of their removal.

With the simple construction thus disclosed it is possible to use similarly slabbed needles on a multiple needle machine and avoid dela s in replacing and ordering the needles. urther the needles may be located close together and thus a series of enchained loops visible on the face of the goods (sewn upside down) may be laid in close parallel rows and in such proximity that an ornamental seam appears as illustrated in my copending application Serial No. 234,009, filed May 1l, 1918.

Having thus set forth the nature of' the invention, what I claim herein is 1. A needle-cla1np comprising a block provided with an open ended channel adapted to receive the shank of a needle, removable wall-members at the opposite ends of the channel, a thrust-member for clamping the needle-shank therein and coacting means on the block and wall-members for holding them against displacement relative to the block by the action of the thrust-member.

2. A needle-clamp for securing needles to a needle-bar and havin a socket formed therein by a transverse y channeled block having lugs on its sides, by embracing bands shaped to encompass said lugs on the blocks, and a thrust member for clamping a series of similar needles each of whose shanks have parallel surfaces.

3. A needle-clamp comprising a block channeled transversely through its bottom face and longitudinally through its opposite sides, a two-part band embracing said block each part having projections fitting into the longitudinal channel in the block, said twopart band forming walls at the opposite ends ofi the channel in the block, and a thrust member for clamping needles by their shanks within the socket formed by the channeled block and two-part band.

4. A needle-clamp comprising a block provided with a transverse channel and a separate channel extending longitudinally of the block, wall-members at the opposite ends of the transverse channel, a thrust-member for clamping the needle-Shanks in the latter channel, and means on the wall-members coacting With one or more walls of the longitudnal channel for holding them against displacement relative to the block by the action of the thrust-member.

5. A needle-clamp having a rectangular socket of uniform depth formed by a block channeled transversely and longitudinally, and by a pair of T-shape channeled members engaging the longitudinal channels in the block and closing the ends of the transverse channel, and a screw for clamping needleshanks arranged within the rectangular socket.

6. A needle-bar provided with an axially arranged socket in one end thereof, a needleclamp having a stud received within said aperture in the needle-bar, a transversely channeled block fixed to said stud, the opposite sides of said channel being parallel, complementary members provided with channels and adapted to close the ends ot the channel in the block, projections on the block arranged within the channels of the members for holding the members and block against relative displacement in a direction transverse the needle-bar, and means carried by one of the members in alinement with the channel in the block for clamping a plurality of needles having similar shanks to the lower end of the needle-bar.

7. A needle-clamp for sewing machines provided with an elongated shank-receiving socket having parallel side walls and removable walls at the opposite ends of the socket, and means acting in the direction oi the length of the elongated socket for clamping a plurality of needles thereon.

In testimony whereof, I have signed my name to this specilication.

ALBERT H. DE VUE. 

